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Project Description
On a scale of 1 to 10, the engineer for this project rated the Cedar Hills Landfill a 9 in difficulty because of the complexity of the different types of liners and liner systems included in the project. Parsons successfully excavated 1 million cubic yards of soil and installed 60 acres of liner. The project also included installing 90,000 ft of leachate, contaminated storm water pipe, and gas pipe; crushing 70,000 tons of on-site ballast; screening 100,000 cubic yards of select material; and pug milling approximately 85,000 cubic yards of construction soil liner.
Parsons' work on the Cedar Hills Landfill also included, grading, compacting, trenching, backfilling soils, and erosion and sedimentation control. Geosynthetic materials installation included a landfill methane gas piping collection system and leachate recovery piping systems. We also constructed extraction wells and pumping facilities, performed boring and jacking, as well as other work necessary for construction of a new refuse disposal area. Parsons also provided staged closure of an existing refuse disposal area and installed landfill gas piping.
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